Piston-packing-removing appliance



1,635,743 12 1927 M. s. DAVENPORT PISTON PACKING REMOVING APPLIANCE Filed Jan. 9. 1926 flttorney flu Patented July 12, 1927. 1

, UNITED STATES- i MAYON S. DAVENPORT, OF LGS ANGELES, CALIFORNIA.

PIsTo N PAcKlNC REMovlNG APPLIANCE.

Application filed January My present invention has to do with the removal of piston packings; and 1t contemplates the provision of an appliance, susceptible of ready application, and adapted when properly applied andoperated to enable a personto expeditiously remove packing rings and this with the expenditure of but little effort. I

To the attainment of the foregoing, the invention consists in the improvement as hereinafter described and definitely claimed.

In the accompanying drawings, forming parts of this specification Fig. 1 is a view showing the appliance constituting the preferred embodiment of my invention in working position;

Fig. 2 is a fragmentary view illustrative of the manner in which the pointed hooks are embedded in the packing rings at the top of the gland;

Fig. 8 is a view showing one end of the cylinder comprised in my improvement;

Fig. 4 is a detail perspective illustrating the lower end of the cylinder and the hooks thereof; and

Fig. 5 is a detail plan view showing a portion of the hand lever and the supporting post in connection therewith.

Similar numerals of reference designate corresponding parts in all of the views of the drawings.

The cylinder 1 is of conventional construction as is also the offset 2 of the cylinder in which is threaded a gland 3 containing packing rings l arranged in the usual manner about a piston rod 5.

Among other elements my novel appliance comprises a cylinder 6 madeup of two semicircular sections hingedly connected at one side by a pintle 7 X in knuckles 8 and detachably connected together at the opposite side of the cylinder through the medium of a removable pin 7. The said cylinder 6 is provided at its lower end with a suitable number, preferably four, hooks 8, which hooks 8, are so fashioned and so disposed that turning of the cylinder attended by downward pressure thereon will bring about embedding of the pointed hooks 8 in the uppermost packing ring in the gland 3. The

upper portion of the cylinder 6 is characteri'laed by opposite lugs 9 disposed laterally to the cylinder as shown in Fig. 3, it being understood that the term laterally is intended to comprehend a radial disposition of the lugs 9. I show the cylinder 6 as provided 9, 1925. Serial No. 80,302.

with two pair of lugs 9 in Fig. 3, but it will he understood that without departure from my invention the cylinder may have one or more pairs of lugs 9, the lugs 9 of each pair being arranged diametrically opposite each other. 7

. The removable pin 7 is located in coincident knuckles 10 on the cylinder sections as illustrated.

In addition to the cylinder 6 characterized as described, my novel appliancecomprises a hand lever 11, and a supporting post 12, the latter being adapted to be disposed on the upper end of the offset portion 2 of the cylinder as illustrated in Fig. 1, to afford a fulcrum support for the lever 11.- The post or support 12 is provided with a yoke 13 at its upper end in which the lever 11 is fulcrumed, and the forward arm of the lever 11 is provided with a yoke l t in the arms of which are depressions 15, designed to receive a pair of lugs 9 after the manner illustrated in Fig. 1.

In the practical use of my novel appliance, the cylinder 6 is placed around the piston rod 5, and the pin 7 is placed in working position to hold the cylinder about the rod 5. Then with the cylinder 6 grasped in the hand or fixed in a Stillson or other appropriate wrench, the cylinder is turned about its axis, and if necessary incident to the said turning of the said cylinder, the same may be forced or pressed downwardly, whereupon the hooks 8 which are preferably provided with the downwardly deflected point-s will be embedded in the uppermost packing ring in the gland 3. After the hooks turning and consequent release of the pack-' ing ring from the hooks 8 because of the stress or strain'applied to the lever 11.

Manifestly it is within the purview of my invention to make the several parts of my novel appliance of any material or materials consonant with the functions of the said parts; and I would also have it understood that the hooks or the cylinder equipinents tor attarluuent oi the cylinder to packing may he of any description compatible with the purpose, of my invention. the invention in its hroad aspects covering any means adapted to he interlocked with or engaged with packing. and capable oi being moved endwise for the extraction of packing whether in the oral ol rings or otherwise.

it will he manifest from the foregoing}; that through the medium oi my novel at pliant-e packing ma lie extracted with but; little etli'ort. on the part oi an ope 'ator, and it will also he appreciated that. the ilppllilllt't is susceptible of ready appli ration and easy operation and is entirely free of delicate parts such as are likely to get out otf order after a shortperiod of use.

ll ave entered into a detailed description olthe construction and relative arrai'i zement of the parts embraced in the present and preferred ei'i'ihodiment of my in 'entiou in order to impart a full, clear and exactunderstanding of the said en'ihodiment. 1 do notdesire, hmvever, to he llIlLlOl'Sl'Utltl as confiningmyselt to the SPBLli'lC construction and relative ai' 'angement of parts as disclosed. my invention being; detined by my a ppended claims Within the scope of which structural changes and changes in arrangement may he made Without departure from my invention.

.l-laving' described my invention. what 1 claim and desire to secure by Letters-Patent, is:-

.l. Packing pulling means comprising an endu'iee movable and turnahle element. means on said element for the connection thereof to packing on turning novement; oil the element, opposite huge on the endxvise novahle and turi'ialile element, and means associated with said. element for the said endwise movement of the same; the said means for moving said element emlwise beme in the form oi? a lever having); means to engage said lugrs. and the said lever being equipped with a iiulcrmn support.

:2. Packing pulling; means coni n'isia; an enduise movahle and turnahlo element means on said element for the LOiiIlCtfl'iOH thereof to packing on turning movement ol the element, and mians irssociated with said element for the said endwise movement oi the same; the said element heing in the 'lOl'lll oi" a ovlimler including section. and meane i'or detacllahly connecting the sections together about a piston rod, and the sections being; equipped with hooks to engage parking: and connect the same to the sections on turning movement oi said element. and being also equipped with o mositeliuns, and

MAYON. DiiVlilNlPOll/i. 

